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Pull requests list

feat: define well-founded recursion without large elimination of Acc breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan changelog-library Library toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14892 opened Aug 22, 2026 by nomeata Collaborator • Draft
2
test: how costly is eta-for-unit ? toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14891 opened Aug 22, 2026 by arthur-adjedj Contributor • Draft
6
fix(Data/Dyadic): swap names of Dyadic.not_lt and Dyadic.not_le toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14890 opened Aug 22, 2026 by plp127 Contributor Loading…
2
fix: mdata in mvcgen changelog-no Do not include this PR in the release changelog toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14889 opened Aug 21, 2026 by hargoniX Member Loading…
3
fix: correct LEAN_EXPORT attribute order in ffi.cpp toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14888 opened Aug 21, 2026 by joehendrix Contributor Loading…
2
fix: correct lean_kernel_diag_is_enabled declaration to match generated C toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14886 opened Aug 21, 2026 by FawadHa1der Contributor Loading…
1
3
feat: add lake check as a leanchecker/comparator frontend breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan changelog-lake Lake mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14885 opened Aug 21, 2026 by Kha Member • Draft
2
feat: add a leanchecker-paranoid binary with mimalloc mitigations changelog-other release-ci Enable all CI checks for a PR, like is done for releases toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14884 opened Aug 21, 2026 by Kha Member Loading…
2
feat: introduce findMatchingDecl? for code quality checks wrapped in Lean.Linter (DRAFT) toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14880 opened Aug 21, 2026 by wkrozowski Contributor • Draft
2
chore: golf two DerivingHelper proofs toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14867 opened Aug 20, 2026 by eric-wieser Contributor Loading…
2
chore: update to mimalloc 3.5.0 builds-manual CI has verified that the Lean Language Reference builds against this PR builds-mathlib CI has verified that Mathlib builds against this PR mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14866 opened Aug 20, 2026 by Kha Member • Draft
4
feat: lake: read recorded code quality metrics in lake lint changelog-lake Lake toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14862 opened Aug 20, 2026 by wkrozowski Contributor Loading…
2
feat: add monotonicity_by clause to coinductive predicates changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14861 opened Aug 20, 2026 by wkrozowski Contributor Loading…
2
feat: add strong (co)induction principles for lattice-theoretic predicates changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14855 opened Aug 20, 2026 by wkrozowski Contributor Loading…
2
fix: adjust name mangling in kernel's nested inductive type processing changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14846 opened Aug 19, 2026 by kmill Collaborator • Draft
1
2
refactor: new LRAT checker
#14842 opened Aug 19, 2026 by hargoniX Member • Draft
20
feat: add hint to transitive deprecated usage warning changelog-no Do not include this PR in the release changelog toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14841 opened Aug 19, 2026 by wkrozowski Contributor • Draft
2
fix: reuse the instances of a non-exposed definition in inferInstanceAs builds-mathlib CI has verified that Mathlib builds against this PR changelog-language Language features and metaprograms mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14840 opened Aug 19, 2026 by gasparattila Loading…
1
3
feat: lake: make job cancellation a first-class JobState flag builds-mathlib CI has verified that Mathlib builds against this PR changelog-lake Lake mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14835 opened Aug 19, 2026 by dennj Contributor Loading…
3
fix: add missing terminfo on structure fields builds-manual CI has verified that the Lean Language Reference builds against this PR builds-mathlib CI has verified that Mathlib builds against this PR changelog-language Language features and metaprograms mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14834 opened Aug 18, 2026 by kmill Collaborator Loading…
2
refactor: derive vcgen's exception postcondition rules from a type class changelog-tactics User facing tactics toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14827 opened Aug 18, 2026 by sgraf812 Contributor • Draft
4
fix: better structural recursion equations breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan builds-manual CI has verified that the Lean Language Reference builds against this PR mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14822 opened Aug 18, 2026 by Rob23oba Contributor • Draft
6
linear probing experiment toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14810 opened Aug 18, 2026 by TwoFX Member • Draft
8
feat: special case single-child nodes in DiscrTree breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan builds-manual CI has verified that the Lean Language Reference builds against this PR downstream Request a downstream-lean4 adaptation PR. mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14805 opened Aug 17, 2026 by robsimmons Contributor • Draft
13
fix: refcounting and error reporting in the libuv bindings builds-mathlib CI has verified that Mathlib builds against this PR changelog-library Library mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14796 opened Aug 15, 2026 by algebraic-dev Member Loading…
3
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